research/referral help?

I have a 1955 Chevy 3200 Pickup.
It is registered as a house car. Not aftermarket modifications.
It has a shell with fold down bunks and external water tanks on both sides between door and rear wheel wells.

Can't find anything to speak of online and can't get a touch of what it's worth because there were few built/sold.

Looks like you've found one of the early conversion companies.
Chevy was an early pioneer using Conversion companies to build "factory modified" new vehicles, from the 40's to the 60's they had a deal with Napco to convert trucks and Suburbans into 4wd's, this deal ended when they began building 4x4's on the GM assembly line in Flint Michigan in the early 60's.
It' would appear in the 50's they also had a deal to build mini motor homes (what passed for one in those days).
I know the area where the company was located, lived a few blocks away at one time, that particular company hasnt been in that location since the mid 70's.
I'm assuming they manufactured the front brush guard too, looks like a nice conversion. For the year overall the truck is in good condition, a perfect example for restoration.
Being a factory conversion makes it worth a little more than a standard 1955 truck, because it is rare, but the price really depends on finding the buyer willing to pay. I'd look at Hemmings Motor News or something like that for a better price index.
I saw a 1953 Chevy truck converted by the same company, it was at a truck show about 15 years ago, they had it fully restored and the owner was selling it for $28k, he had a parts truck that was a conversion too, it was the same year and 90% complete but unrestored, he was asking $9500 for it.

Looks like they coined the phrase "The Borg" a few years before Star Trek, who knows maybe they were inspiration for Gene Roddenberry and crew.

Yea I agree, that truck's in good condition, as rare as it is with the conversion though it would be a true loss for someone to turn it into a factory 55 it needs to be restored with the conversion.
I dont see a lot of problem with that though, it looks like most pieces are there.